JPH04123002U - Ventilation structure for vehicle lights - Google Patents

Abstract

(57) [Summary] [Purpose] In vehicle lamps that have ventilation holes in the chamber formed by the housing and lens, when air is sucked, dust contained in this air gradually accumulates on the reflector, etc. However, with the passage of time, the illuminance gradually decreases and eventually becomes defective. [Structure] The ventilation hole 1 is pipe-shaped and the housing 11
The inner opening 1a is inserted through the housing 11.
A surrounding wall 2 is provided on the reflecting mirror 13, which faces the back surface of a wall-like structure located inside, for example, a reflecting mirror 13 at an appropriate interval, and surrounds the pipe-shaped ventilation hole 1 at an appropriate interval. By adopting a ventilation structure for a vehicle lamp, the air to be sucked collides with the reflector 13, and the flow rate decreases at this time to separate dust and reduce the amount of dust sucked into the chamber. , the problem is solved by reducing the amount of accumulation in the reflecting mirror 13 and the like.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to vehicle lights such as headlamps, and in detail, This relates to the structure of a ventilation hole provided in a housing of a lamp.

0002

[Conventional technology]

An example of a conventional vent hole of this type is shown in FIG. In order to provide ventilation in the sealed chamber formed by the lens 11 and the lens 12, For this purpose, the housing 11 is provided with a pipe-shaped ventilation hole 91 protruding from the outside. By connecting a rubber pipe 92 or the like to this ventilation hole 91, water droplets etc. prevents inhalation of Incidentally, inside the headlamp 10, there is a reflector 13, etc. It houses the components that make up the.

0003

[Problem that the idea aims to solve]

However, in the conventional ventilation hole 91 described above, the rubber pipe 92 cannot be connected. Although it is true that inhalation of water droplets can be prevented, dust floating in the air can be prevented. As the usage time of the headlamp 10 passes, Dust accumulates on the reflector 13, etc., resulting in a problem of poor illumination. The problem was to resolve these points.

0004

[Means to solve the problem]

The present invention provides a housing as a specific means to solve the above-mentioned conventional problems. In the vehicle lamp provided with a ventilation hole, the ventilation hole is pipe-shaped. suitably extending the opening through the housing into a wall-like structure within said housing. The pipe-shaped ventilation hole is preferably provided in the structure, and A vehicle lamp characterized in that a surrounding wall is provided at appropriate intervals. By providing a ventilation structure, it is possible to prevent the intrusion of dust, and the above-mentioned conventional It is something that solves problems.

[0005]

【Example】

Next, the present invention will be explained in detail based on an embodiment shown in the drawings. In order to facilitate understanding, the same parts as in the conventional example are given the same reference numerals and explained. Explanation of some overlapping parts will be omitted.

[0006] What is indicated by the reference numeral 10 in FIG. 1 is a headlamp, and this headlamp 10 is A chamber is formed by the housing 11 and the lens 12, and the housing 11 has the housing 11 and the lens 12 together. This is different from the conventional example in that a ventilation hole 1 is provided to ventilate the chamber. However, according to the present invention, the vent hole 1 is approximately pipe-shaped and the housing 11.

[0007] The ventilation hole 1 of the present invention will be explained in more detail below. from the outside of the housing 11 to the inside, that is, from the inside of the housing 11. It is formed to protrude both on the side and the outside, but especially on the inner end 1. In a, for example, the back surface of the reflecting mirror 13 which has a wall shape provided in the container chamber described above. The opening is opened so as to face the structural members such as at an appropriate interval.

[0008] At the same time, from the side of the reflecting mirror 13, the ventilation holes 1 are removed at appropriate intervals. A ring-shaped surrounding wall 2 is provided so as to surround the vent hole 1. After the drawn air collides with the reflector 13, its traveling direction is reversed, and the air The material is diffused into the chamber through the space between the outer diameter of the hole 1 and the surrounding wall 2. Ru.

[0009] Next, we will explain the effects of the ventilation structure of the present invention with the above configuration. With the above configuration, the air containing dust sucked from the ventilation hole 1 is It collides with the projecting mirror 13, temporarily loses its flow velocity, and then reverses. This means that the dust contained in the air is removed from the back surface of the reflecting mirror 13. When colliding with The number of dust particles in the air is reduced.

0010 In addition, although the above explanation was made using the back surface of the reflecting mirror 13 as an example of the structure, this is not limited to the reflecting mirror 13, for example, an edge provided on the periphery of the reflecting mirror may be used. You are free to choose anything else, such as squash.

[0011]

[Effect of the idea]

As explained above, with this invention, the ventilation hole is pipe-shaped and the housing is closed. the opening in a wall-like structure within the housing at a suitable distance therethrough; and the pipe-shaped ventilation holes are arranged at appropriate intervals in the structure. By adopting a ventilation structure for vehicle lighting equipment that has a wall surrounding it, it is possible to The air containing dust that is sucked into the structure collides with the structure at once, causing the dust to adhere or settle. By doing so, it separates and prevents it from being diffused into the container, and it also prevents it from being exposed to reflective mirrors, etc. This product reduces the amount of dust adhering to the vehicle, prevents a decrease in illuminance, and extends the life of vehicle lighting. It is effective.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a ventilation structure for a vehicle lamp according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG. 1.

FIG. 3 is a sectional view showing a conventional example.

[Explanation of symbols]

1...Vent hole 1a...inner end 2... Surrounding wall 10...Headlamp 11...Housing 12...lens 13...Reflector

Claims (1)

[Scope of utility model registration request] 1. A vehicle lamp in which a housing is provided with a ventilation hole, wherein the ventilation hole is pipe-shaped and penetrates through the housing, and the opening thereof is appropriately connected to a wall-like structure within the housing. 1. A ventilation structure for a vehicle lamp, characterized in that the structural body is provided with a surrounding wall that surrounds the pipe-shaped ventilation hole at an appropriate distance, the structure facing each other at a distance.